| 一种建立航空发动机状态变量模型的新方法 |
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| 引用本文： | 冯正平,孙健国,黄金泉,蔡红武.一种建立航空发动机状态变量模型的新方法[J].航空动力学报,1998,13(4):435-438,463. |
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| 作者姓名： | 冯正平 孙健国 黄金泉 蔡红武 |
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| 作者单位： | 南京航空航天大学 |
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| 摘 要： | 本文提出了一种用于建立航空发动机状态变量模型的新方法—拟合法：即用发动机部件级模型在稳态工作点处的非线性动态响应数据拟合该点处的小偏离状态变量模型。并应用这种方法建立了某型涡扇发动机在高空稳态工作点处的小偏离状态变量模型，以及地面加速过程的大偏离状态变量模型。通过动态仿真研究，可以看出：与偏导数法比较，拟合法明显提高了建摸精度。
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| 关 键 词： | 航空发动机 状态变量 拟合 建立模型 |
| 收稿时间： | 1997/10/1 0:00:00 |
| 修稿时间： | 1/1/1998 12:00:00 AM |
A NEW METHOD FOR ESTABLISHING A STATE VARIABLE MODEL OF AEROENGINE |
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| Feng Zhengping,Sun Jianguo,Huang Jinquan and Cai Hongwu.A NEW METHOD FOR ESTABLISHING A STATE VARIABLE MODEL OF AEROENGINE[J].Journal of Aerospace Power,1998,13(4):435-438,463. |
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| Authors: | Feng Zhengping Sun Jianguo Huang Jinquan and Cai Hongwu |
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| Institution: | 2nd Dept.Nanjing University of Aeronautics and Astronautics,Nanjing 210016;2nd Dept.Nanjing University of Aeronautics and Astronautics,Nanjing 210016;2nd Dept.Nanjing University of Aeronautics and Astronautics,Nanjing 210016;2nd Dept.Nanjing University of Aeronautics and Astronautics,Nanjing 210016 |
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| Abstract: | A new method for establishing aeroengine's State Variable Model (SVM)-fitting method is proposed.The SVMs of small perturbation about steady operating points of an engine are established by fitting nonlinear dynamic simulation data of its component-level models at the points.Then the SVMs of small perturbation about steady points at ground and in flight and also the SVM of large perturbation of ground acceleration for a turbofan engine are established by this method.Dynamic simulation results show that the SVMs established by fitting method have much higher accuracy than the SVMs established by the method of bias derivative. |
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| Keywords: | Aircraft engines State variables Fitting Modeling |
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